housing: Start

[tattlekey] / housing / cherryVoid.scad

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+// Retrieved from https://www.thingiverse.com/thing:4120804
+
+// Riskable's Cherry MX void/cutout module for making keyboard (top) plates and key switch testers
+
+$fn = 32;
+
+use <roundedCube.scad> // Because it's nice to have rounded corners on these sorts of things
+
+// AUTHOR: Riskable <riskable@youknowwhat.com>
+// VERSION: 1.1 (Changelog is at the bottom)
+// LICENSE: Creative Commons - Attribution - Non-Commercial (if you want to use it in a commercial setting/product just ask!)
+
+// NOTES
+/*
+    * Feel free to use this .scad in your own projects to add proper Cherry MX-styled switch cutouts to keyboards, perhipherals, testers, or whatever you like.
+    * You can just copy cherry_switch_void() into your own code if you like--it's entirely self-contained and reasonably small.  Just make sure to credit, "This module was written by Riskable:" or something like that =)
+*/
+
+/* Creates the shape of a (proper) Cherry MX switch hole.
+    height: The thickness, really.  Doesn't impact PLATE_THICKNESS
+    x_extra: Extra (void) space on the X axis (e.g. to save some plastic). Doesn't change the top plate.
+    y_extra: Extra (void) space on the Y axis.  Same thing as X.
+    tolerance: Extra room on all sides (0.1 default should be good for most printers)
+    plate_thickness: How thick the top plate will be. Typical Cherry MX plates are about 1.5mm thick.
+*/
+module cherry_switch_void(height=12, x_extra=0, y_extra=0, tolerance=0.1, plate_thickness=1.5, corner_radius=0.5) { // Cherry MX body is supposed to be 11.6mm
+    switch_width = 15.6;
+    switch_length = 14; // Slightly shorter because we're making an acurate profile (see below)
+    center_space = 3.5; // Space between the cutouts on the sides of the switch
+    sides_width = (5+center_space); // Taken from the Cherry MX developer PDF
+    // Make the basic switch shape:
+    cube(
+        [switch_length+tolerance, switch_length+tolerance, height],
+        center=true);
+    // Profile for the sides:
+    translate([0,sides_width/2,0])
+        cube([switch_width-tolerance, center_space+tolerance, height], center=true);
+    translate([0,-sides_width/2,0])
+        cube([switch_width-tolerance,center_space+tolerance, height], center=true);
+    // Fill out the rest with a solid cube so that there's a top plate + empty space beneath
+    translate([0,0,plate_thickness])
+        roundedCube(
+            [switch_width+x_extra, switch_width+y_extra, height],
+            r=corner_radius, center=true);
+}
+
+/*
+CHANGELOG:
+    1.1: Now using roundedCube so the interior edges aren't so sharp.
+    1.0: Initial release
+*/